EP 0892084 A1 19990120 - Method for preventing contamination by lead from metallic piping devices
Title (en)
Method for preventing contamination by lead from metallic piping devices
Title (de)
Verfahren zur Verhinderung von Bleikontamination durch Rohrleitungsvorrichtungen
Title (fr)
Procédé pour éviter la contamination par le plomb à partir de dispositifs métallique de canalisation
Publication
Application
Priority
JP 20264897 A 19970714
Abstract (en)
A method for preventing contamination by lead from a piping device (3) made of a lead-containing copper alloy includes the step (13) of chemically conditioning with an acid-containing detergent (2) at least part of the piping device coming into contact with a liquid, thereby inducing corrosion of lead dissolved out onto a surface layer of the liquid-contacting part of the piping device to delead the surface layer of the liquid-contacting part.
IPC 1-7
IPC 8 full level
B08B 9/02 (2006.01); C23F 1/00 (2006.01); C23F 15/00 (2006.01); C23G 1/10 (2006.01); E03B 7/09 (2006.01); F16L 58/00 (2006.01)
CPC (source: EP)
C23F 1/00 (2013.01); E03B 7/006 (2013.01); F16L 58/00 (2013.01)
Citation (search report)
- [X] WO 9706313 A1 19970220 - EUROPA METALLI SPA [IT], et al
- [Y] US 5244539 A 19930914 - MCGRATH PETER T [DE], et al
- [Y] US 4921571 A 19900501 - KUKANSKIS PETER E [US], et al
- [PX] US 5707421 A 19980113 - JOE SHELLEY L [US]
- [E] WO 9830733 A1 19980716 - GLOBE VALVE CORP [US], et al
- [A] EP 0315891 A1 19890517 - RUWEL WERKE GMBH [DE]
- [XY] PAIGE J L ET AL: "LEACHABILITY OF LEAD FROM SELECTED COPPER-BASE ALLOYS", CORROSION., vol. 48, no. 12, 1 December 1992 (1992-12-01), HOUSTON US, pages 1040 - 1046, XP000560262
- [Y] PATENT ABSTRACTS OF JAPAN vol. 009, no. 111 (M - 379) 15 May 1985 (1985-05-15)
Designated contracting state (EPC)
DE GB IT SE
DOCDB simple family (publication)
EP 0892084 A1 19990120; AU 744700 B2 20020228; AU 744700 C 20021107; AU 7504998 A 19990121; CN 1131340 C 20031217; CN 1214376 A 19990421; HK 1018709 A1 19991230; JP 3345569 B2 20021118; JP H1129887 A 19990202
DOCDB simple family (application)
EP 98112550 A 19980707; AU 7504998 A 19980708; CN 98119817 A 19980714; HK 99103738 A 19990831; JP 20264897 A 19970714